8 Symptoms of a Failing or Malfunctioning Power Brake Booster

Carservicesinreading
3 min readJul 24, 2023

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The power brake booster is a crucial component of your vehicle’s braking system that helps apply force to the brakes, making it easier for you to stop the car. However, like any other mechanical part, the power brake booster can experience issues over time. Understanding the symptoms of a failing or malfunctioning power brake booster can save you from potential accidents and costly repairs. If you’re in Reading and seeking reliable car services and repairs, this article will shed light on common power brake booster problems and guide you to the right garage in Reading for assistance.

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1. Increased Brake Pedal Effort

One of the primary indicators of a failing power brake booster is an increase in brake pedal effort. If you notice that you need to apply more force than usual to bring your car to a stop, there could be a problem with the brake booster. This symptom should not be ignored, as it compromises your vehicle’s braking performance and safety.

2. Spongy Brake Pedal

A spongy or soft brake pedal is another sign of a potential issue with the power brake booster. When you press the brake pedal, it might feel mushy or have excessive give before the brakes engage. This could be caused by air or fluid leaks within the brake booster system, resulting in a loss of hydraulic pressure.

3. Prolonged Braking Distance

If your car’s braking distance has increased significantly, it might be due to a malfunctioning brake booster. A failing booster can reduce the effectiveness of your brakes, making it difficult to bring your vehicle to a complete stop quickly. This poses a serious safety risk, especially in emergency situations.

4. High-Pitched Hissing Noise

A hissing noise coming from under the dashboard when you apply the brakes can indicate a vacuum leak in the power brake booster. The brake booster operates using a vacuum, and any leaks can lead to a loss of vacuum pressure, affecting the brake booster’s performance.

5. Brakes Engage on Their Own

A malfunctioning brake booster may cause the brakes to engage on their own, without pressing the brake pedal. This can be alarming and dangerous, as it can lead to unexpected stops while driving. If you encounter this issue, do not delay seeking professional car repairs in Reading.

6. Brake Fluid Leaks

Inspect the area around the brake booster for any signs of brake fluid leaks. A failing brake booster can develop leaks, leading to a loss of brake fluid. Low brake fluid levels can affect the brake system’s hydraulic pressure, compromising its ability to stop the vehicle effectively.

7. Brake Pedal Vibrations

A malfunctioning brake booster can also cause vibrations in the brake pedal when applying the brakes. These vibrations may feel unusual and can be an indication of a problem within the brake booster or other braking components.

8. Illuminated Brake Warning Light

Modern vehicles are equipped with electronic systems that monitor various components, including the braking system. If the brake booster develops a problem, it may trigger the brake warning light on the dashboard. If you see this light illuminated, it’s essential to have your car inspected by professionals promptly.

Ignoring symptoms of a failing or malfunctioning power brake booster can jeopardize your safety on the road. If you’re experiencing any of the mentioned symptoms, it’s crucial to seek car services in Reading immediately. Finding a reliable garage in Reading with experienced technicians can help diagnose the issue accurately and ensure your vehicle’s braking system is restored to optimal working condition. Remember, well-maintained brakes are vital for your safety and the safety of others on the road.

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